Rebuilding a file if files have changed

Posted by Todd Strauch on Server Fault See other posts from Server Fault or by Todd Strauch
Published on 2012-06-21T13:44:36Z Indexed on 2012/06/21 15:17 UTC
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I'm having a hard time wrapping my head around this. It seems trivial, but I'm not getting it.

I have two files. If either of those two files changes, I want to rebuild one of them.

Essentially:

if file a changes or file b changes
  then file {"a":
           content => template('a.erb', 'b.erb'),
       }

I know I can audit a file for change, I just don't know how to include that within a conditional. Can anyone point me in the right direction?

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